<template>
    <div>
        <!-- 滑动条 -->
        <div id="slider" class="mui-slider">
            <div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
                <div class="mui-scroll">
                    <a :class="['mui-control-item',item.id == 0 ? 'mui-active' : '']" v-for="(item,index) in cates" :key="index" @tap="getphotolistByCateId(item.id)">
                        {{item.title}}
                    </a>
                </div>
            </div>
		</div>
        
        <ul class="photo-list">
            <router-link v-for="(item,index) in list" :key="index" :to="'/home/photoinfo/' + item.id " tag="li">
                <img v-lazy="item.img_url">
                <div class="info">
                    <h1 class="info-title">{{item.title}}</h1>
                    <div class="info-body">{{item.zhaiyao}}</div>
                </div>
            </router-link>
        </ul>

    </div>
</template>

<script>
import mui from "../../lib/mui/js/mui.min.js"

// mui('.mui-scroll-wrapper').scroll({
//         deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
// });
export default {
    data(){
        return{
            cates:[],
            list:[]
        }
    },
    created() {
      this.getAllCategory()
      this.getphotolistByCateId(0)
    },
    methods:{
        // 获取所有图片分类
        getAllCategory(){
            this.$http.get('api/getimgcategory').then(res=>{ 
                if(res.body.status ===0 ){
                    res.body.message.unshift({ title:"全部",id : 0 });
                    this.cates = res.body.message;
                }
            })
        },
        // 图片
        getphotolistByCateId(cateid){
            this.$http.get('api/getimages/' + cateid).then(res=>{
                if(res.body.status === 0){
                    this.list = res.body.message;
                }
            })
        }
    },
    mounted(){ // 当组件中的DOM 结构被渲染好 并到页面中后，会执行 这个 钩子函数
        mui('.mui-scroll-wrapper').scroll({
            deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
        });
    }
}
</script>

<style scoped>
*{
    touch-action:pan-y;
}
img[lazy=loading] {
  width: 40px;
  height: 300px;
  margin: auto;
}
.photo-list{
    list-style: none; 
    margin: 0;
    padding: 10px;
    padding-bottom: 0;
}
.photo-list li{
    background-color: #ccc;
    text-align: center;
    margin-bottom: 10px;
    box-shadow:  0 0 9px #999;
    position: relative;
}
.photo-list li img{
    width: 100%;
    vertical-align: middle;
}
.photo-list li img[lazy=loading]{
  width: 40px;
  height: 300px;
  margin: auto;
}
.info{
    color: #fff;
    text-align: left;
    position: absolute;
    bottom: 0;
    background-color: rgba(0,0,0,0.4);
    max-height: 84px;
}
.info-title{
    font-size: 14px;
}
.info-body{
    font-size: 13px; 
}
</style>